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SEGMENT INFORMATION - Summary of Property and Equipment by Major Country (Details) (USD $) In Thousands, unless otherwise specified	May 31, 2013	Nov. 30, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, net	$ 95,959	$ 98,474
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, net	82,292	83,516
United Kingdom
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, net	1,014	1,191
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, net	$ 12,653	$ 13,767

Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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